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Contract OI history

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Mar 19, 2027 EXPIRATION

COHR $280.00 Put

COHR270319P00280000

Latest saved OI589Oct 23, 2026
Last change-5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $280.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5942970 2026-10-02: 415 OI2026-10-05: 420 OI2026-10-06: 439 OI2026-10-07: 434 OI2026-10-08: 434 OI2026-10-09: 437 OI2026-10-13: 445 OI2026-10-14: 445 OI2026-10-15: 584 OI2026-10-16: 592 OI2026-10-21: 594 OI2026-10-23: 589 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

COHR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing589-5
Oct 21, 2026594+2
Oct 16, 2026592+8
Oct 15, 2026584+139
Oct 14, 20264450
Oct 13, 2026445+8
Oct 09, 2026437+3
Oct 08, 20264340
Oct 07, 2026434-5
Oct 06, 2026439+19
Oct 05, 2026420+5
Oct 02, 2026415No prior observation